(idiomatic, usually with the verb exit or enter) Involving a change of whether one is involved in a situation.

2017 August 20, “The Observer view on Donald Trump’s presidency”, in The Observer[1]:

Whether Bannon was sacked, resigned or left by mutual agreement – as usual with the Trump administration there are contradictory accounts – is immaterial. His exit, stage right, follows that of a clutch of other senior White House aides and reinforces the impression that his presidency is unravelling chaotically only seven months after he entered the Oval Office.